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  - CopyRight:	(C) dGB Beheer B.V.
  - Author:	R. K. Singh	
  - Date:	June 2007
  - Contents:	Simple Seismic Operations (Tutorial)
  - RCS:	$Id$
 -->

<body background="backg.png"><title>Tutorial Plugin : Tut Seismic Tools</title>
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<a name="#link-Tut.Tools.Seis"><h1>Tut Seismic Tools</h1>
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<a href=#intro>Intro</a>
<a href=#scale>Scale</a>
<a href=#square>Square</a>
<a href=#smooth>Smooth</a>

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<a name=#intro><h3>Intro</h3>

<p> Here, you can modify a seismic cube by accessing the seismic traces and manipulating their values directly. From the <b>OpendTect</b> menu, select <center><br><b>Utilities  --> Tut Tools  --> Seismic (Direct)</b></center><br>In the <b>Input Cube</b> selection field, select an existing seismic cube. For the <b>Output Cube</b>, you can either select an existing cube or enter the name of a new seismic cube. You can choose from three available operations in the <b>Action</b> field and accordingly specify the corresponding input parameters:<p>

<a name=#scale><h3>Scale</h3>

<p> It performs a linear scaling of the form <b>a + b * x</b>, where parameters <b>a</b> and <b>b</b> are taken from the inputs <b>Shift</b> and <b>Factor</b> respectively.<p>

<a name=#square><h3>Square</h3>

<p> As the name suggests, it takes the square of data values.<p>

<a name=#smooth><h3>Smooth</h3>

<p> This involves a vertical smoothing of traces. You can choose a <b>Low</b> or <b>High</b> filter strength to specify whether 3 or 5 samples are taken for calculating the mean.<p>

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